Webhook to Delete Attachments - not actually deleting them

Hey,

I have a webhook set to be triggered when data changes in the table. The webhook deletes a set of attachments when something is checked. At first glance, everything seems to work and the pictures that were once in the attachment field don't show, but when I go to the revision history, it still shows that the picture is there and somehow there is a deleted placeholder as the current revision.  Ive attached a picture that shows this

Here is my webhook code:
HTTP method: POST
Message format: XML
Message header: QUICKBASE-ACTION    API-EDITRECORD
Message body: 
<qdbapi>
<usertoken>%user.token.xxxxxxxxxxxxx.Jordan McAlister%</usertoken>
<rid>[Record ID#]</rid>
<field fid="30" filename="delete"></field>
<field fid="31" filename="delete"></field>
<field fid="32" filename="delete"></field>
<field fid="33" filename="delete"></field>
<field fid="34" filename="delete"></field>
<field fid="420" filename="delete"></field>
<field fid="421" filename="delete"></field>
<field fid="422" filename="delete"></field>
<field fid="423" filename="delete"></field>
<field fid="424" filename="delete"></field>
</qdbapi>



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Jordan McAlister
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